Re: Getting the bounding box for a subcomponentcollection?

Alok Mon, 09 Jul 2012 14:09:15 -0700

def _getBBoxFromPoly(sel):
    vertexColl = sel.Subcomponent.ComponentCollection.NeighborVertices()
    xPosArr, yPosArr, zPosArr = list(vertexColl.PositionArray)
    xArr = []; yArr = []; zArr = []
    xFormMtx = sel.Subcomponent.Parent3DObject.Kinematics.Global.Transform.Matrix4

    for i in range(len(xPosArr)):
        posVec = XSIMath.CreateVector3(xPosArr[i], yPosArr[i], zPosArr[i])
        posVec.MulByMatrix4InPlace(xFormMtx)
        xArr.append(posVec.X)
        yArr.append(posVec.Y)
        zArr.append(posVec.Z)

    xMin = min(xArr)
    xMax = max(xArr)
    yMin = min(yArr)
    yMax = max(yArr)
    zMin = min(zArr)
    zMax = max(zArr)

    return xMin, yMin, zMin, xMax, yMax, zMax

    xMin, yMin, zMin, xMax, yMax, zMax = _getBBoxFromPoly(sel)

    sclX = xMax - xMin
    sclY = yMax - yMin
    sclZ = zMax - zMin

    ctrX = xMin + (sclX / 2)
    ctrY = yMin + (sclY / 2)
    ctrZ = zMin + (sclZ / 2)

On 09/07/2012 4:59 PM, Vincent Ullmann wrote:

For the Center i did a little Script some time ago....
Sadly it only works when the Object got no Transformations on it.

Also these RotationStuff may be incorrect

To get a BoundingBox, you could try to modify this, so that it keeps the lowest/highest X/Y/Z-Component and Outputs them

(See the CustomICE-Node-Example "Get BoundingBox", thats exactly the thing i would do in jScript to get a BoundingBox)

// Get Selection

var oSel = selection(0);

var oSelCtr = Sel_Center(oSel);

var vVecX = oSelCtr[0];

var vVecY = oSelCtr[1];

var vVecZ = oSelCtr[2];

var vRotX = oSelCtr[3];

var vRotY = oSelCtr[4];

var vRotZ = oSelCtr[5];

// ------------------------------------------------------------------------

// Get Selection Center

function Sel_Center(oSel)

{

var vAllVerts = 0;

var vPosX = 0; var vPosY = 0; var vPosZ = 0;

var vNrmX = 0; var vNrmY = 0; var vNrmZ = 0;

var oSelType = oSel.Type;

switch (oSelType)

{

// If Poly or Edge

case "polySubComponent":

case "edgeSubComponent":

var vSubCompCount = oSel.SubComponent.ComponentCollection.Count;

for (i=0; i<vSubCompCount; i++)

{

var vVertCount = oSel.SubComponent.ComponentCollection.Item(i).Vertices.Count;

for (j=0; j<vVertCount; j++)

{

var vAllVerts = vAllVerts + 1;

var vPosX = vPosX + oSel.SubComponent.ComponentCollection.Item(i).Vertices(j).Position.x;

var vPosY = vPosY + oSel.SubComponent.ComponentCollection.Item(i).Vertices(j).Position.y;

var vPosZ = vPosZ + oSel.SubComponent.ComponentCollection.Item(i).Vertices(j).Position.z;

var vNrmX = vNrmX + oSel.SubComponent.ComponentCollection.Item(i).Vertices(j).Normal.x;

var vNrmY = vNrmY + oSel.SubComponent.ComponentCollection.Item(i).Vertices(j).Normal.y;

var vNrmZ = vNrmZ + oSel.SubComponent.ComponentCollection.Item(i).Vertices(j).Normal.z;

} // for j End

} // for i End

break; // Case End

// If Vertex

case "pntSubComponent":

var vAllVerts = oSel.SubComponent.ComponentCollection.Count;

for (i=0; i<vAllVerts; i++)

{

var vPosX = vPosX + oSel.SubComponent.ComponentCollection.Item(i).Position.x;

var vPosY = vPosY + oSel.SubComponent.ComponentCollection.Item(i).Position.y;

var vPosZ = vPosZ + oSel.SubComponent.ComponentCollection.Item(i).Position.z;

var vNrmX = vNrmX + oSel.SubComponent.ComponentCollection.Item(i).Normal.x;

var vNrmY = vNrmY + oSel.SubComponent.ComponentCollection.Item(i).Normal.y;

var vNrmZ = vNrmZ + oSel.SubComponent.ComponentCollection.Item(i).Normal.z;

} // for i End

break;

//If Selection =/= Poly/Vertex/Edge

default:

var vAllVerts = 1;

} //Switch End

//Convert Normal-Direction to Rotation

var vecWorldX = XSIMath.CreateVector3(); vecWorldX.Set (1,0,0);

var vecWorldY = XSIMath.CreateVector3(); vecWorldY.Set (0,1,0);

var vecWorldZ = XSIMath.CreateVector3(); vecWorldZ.Set (0,0,1);

var vecNrmX = XSIMath.CreateVector3(); vecNrmX.Set ( vNrmX/vAllVerts, vNrmY/vAllVerts, vNrmZ/vAllVerts);

var vecNrmY = XSIMath.CreateVector3(); vecNrmY.Set ( 0, vNrmY/vAllVerts, vNrmZ/vAllVerts);

var vecNrmZ = XSIMath.CreateVector3(); vecNrmZ.Set ( 0, 0, vNrmZ/vAllVerts);

var vRotX = vecNrmX.Dot (vecWorldX);

var vRotY = vecNrmY.Dot (vecWorldY);

var vRotZ = vecNrmZ.Dot (vecWorldZ);

LogMessage ("Position: X: " + vPosX/vAllVerts + " / Y: " + vPosY/vAllVerts + " / Z: " + vPosZ/vAllVerts);

LogMessage ("Rotation: X: " + vRotX + " / Y: " + vRotY + " / Z: " + vRotZ);

return [vPosX/vAllVerts, vPosY/vAllVerts, vPosZ/vAllVerts, vRotX, vRotY, vRotZ]

}

// ------------------------------------------------------------------------

Re: Getting the bounding box for a subcomponentcollection?

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